Element Model For Structural Analysis Research Articles

A mixed 3D-1D finite element formulation for analysis of geomaterial structures with embedded curvilinear inclusions: application to load transfer in mooring anchor systems

Abstract A finite element model for structural analysis of media with embedded inclusions is presented. The “embedded element concept” is adopted to model the contact interaction of two medium components along the contact interface considering a mixed 3D-1D formulation. The Mohr-Coulomb interface model is employed to define the bond-stress and bond-slip relation and strains associated with bond-slip are assumed to remain infinitesimal along the interface. Nonlinear analysis is performed with a corotational kinematics description introduced in the context of embedded approach. The problem of load transfer in mooring anchor systems was investigated and reasonable results were obtained using the present model.

Development of Three-Dimensional Finite Element Model for Structural Analysis of Airport Concrete Pavements

Development of Three-Dimensional Finite Element Model for Structural Analysis of Airport Concrete Pavements

An extended finite element model for structural analysis of cracked beam-columns with arbitrary cross-section

In this paper, an efficient finite element model for the structural analysis of cracked beam-columns with arbitrary cross-sections is presented. For this propose the combination of a planar beam element with only displacement degrees of freedom and extended finite element method (XFEM) is used. This element is highly capable in modeling the effect of edge cracks on the structural behavior of beams under various loading and boundary conditions. The method is able to solve the problem related to cracked beams with non-rectangular cross-sections with much less computational efforts compared to the available extended finite element models. Numerical examples are given to demonstrate the accuracy and the efficiency of the present method. There is a good agreement between the results obtained by the proposed method and those obtained by ABAQUS XFEM.

Numerical Structural Analysis on a Composite Main Wing of WIG Craft

This paper presents a finite element model for structural analysis of composite main wing for an one-seater Wing in Ground Effect (WIG) craft. FEA models have been developed using sandwich construction having composite skin – spar laminates and foam core. The analysis for main wing structure through numerical structural analysis are developed using commercial FEM code ABAQUS. Displacement boundary conditions are employed for the global model. A critical area with high displacement and stress is developed with global mesh. Materials failure criteria for composites are applied on the model and failure index is checked.

Finite element analysis of thin-walled composite laminated beams with geometrically nonlinear behavior including warping deformation

A finite element model for structural analysis of composite laminated thin-walled beam structures, with geometrically nonlinear behavior, including torsion warping deformation, is presented. A general continuum formulation considering the updated Lagrangean procedure and a generalized displacement control method, are used to describe the deformation of the structure. The beam cross-section geometry is discretized by quadratic isoparametric finite elements to determine its bending-torsion properties. The structural discretization is performed throughout three-dimensional two-node Hermitean finite beam elements, with seven degrees-of-freedom per node. Several applications are presented, addressing the influence of lamina orientation on the structural behavior.

Elastic-Plastic Analysis of Honeycomb Sandwich Panel by Using Honeycomb Element.

This paper presents a simple method for structural analysis of honeycomb sandwich panel(HSP), which is used as light weight and high stiffness material. It is shown that the rigidity of honeycomb core is very influential to the stiffness of HSP when HSP is subjected to bending load, and elastic and plastic moduli of rigidity are given by honeycomb parameters such as cell size and cell wall thickness. Therefore the authors propose the finite element model for structural analysis of HSP, which can simulate the HSP deformed behavior without detailed hexagonal mesh. The analyses results given by the proposed element agree with the results of the experiment and the detailed meshing analyses. This element doesn't reduce the precision but significantly reduces the time for pre and post processes, and analyses.

Elastic-Plastic Analysis of Honeycomb Sandwich Construction by Using Honeycomb Model.

A simple method for structural analysis of honeycomb sandwich construction (HSC), which is used as light weight and high stiffness material, was given. It was shown that a rigidity of honeycomb material is very influential to the stiffness of HSC when HSC is subjected to bending load, and elastic and plastic moduli of rigidity are given by honeycomb parameters such as cell size and cell wall thickness. Therefore the authors proposed the finite element model for structural analysis of HSC, which can simulate the HSC deformed behavior without detailed hexagnal mesh. The analyses results given by proposed model agreed with the results of the experiment and the detaied meshing analyses. This model doesn't reduce the precision but reduce much time for pre-post processes and analyses.

Preliminary mesh checking for structural analysis

The purpose of this work is to provide tools for checking the nodes and elements of a Finite Element Model for Structural Analysis. All the checks related to single elements (warping and stretch factor, interior angles) can be performed on the whole model with APL scalar functions (without any loop). Operations that involve comparison between elements (such as checking for coincident nodes and coincident elements) require a non-trivial approach. A simple algorithm for recursive space-splitting is described, along with performance considerations for large models. Graphic output obtained using the Graphics Support Library of RTPC and an interface to Interleaf Workstation Publishing System are also provided.